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Mozilla Voice Challenge

Mozilla Voice Challenge

We are on a mission to find which specific open source technologies need to be developed and integrated to power voice-enabled products. Read Overview...

The Challenge

We are on a mission to find which specific open source technologies need to be developed and integrated to power voice-enabled products. We want to open up the voice product development process, to make it transparent and accessible to everyone.

The first two steps in this direction have been the Common Voice project, the compilation of a multilingual, open and publicly available dataset of labeled audio samples to be used to train voice-enabled applications, and Mozilla Speech open source projects (text-to-speech engine, and speech-to-text engine). 

Now, we’re taking the next step: we would like to identify and integrate a full plan to define the voice technology space by creating a “stack” of open source technologies to support the development of new voice-enabled products. Click on the orange ACCEPT CHALLENGE Button to apply!


The Objective

To create a comprehensive stack of open-source voice-enabled technologies for the development of voice-enabled products. 

We envision that some elements of this stack would be the following technologies:

  • Language parsing: stemming, entity recognition, dialog management, and summarization
  • Intent parsing
  • Keyword alignment
  • Keyword spotting
  • Voice-signal processing
  • Natural Language Processing (NLP)
  • Text-to-speech (TSS)
  • Speech-to-text (STT)

We want to improve this list by adding more relevant technologies and then place the list in a public repository for open access. To achieve this, all proposed technologies in the stack need to be open-source licensed.


Your Solution

When composing the stack, HeroX Solvers should answer the following questions:

  1. Which specific technologies need to be added to this list? Please, provide a detailed explanation of why each of them deserves to be added to the list. The quality of this explanation is as important as the number of proposed specific technologies.
  2. What open source options are available for each of these technologies? Please, provide an estimate of their quality.
  3. What would a full stack of open source voice technologies look like? Please, choose an open-source project for each piece and describe the “architecture” that would bring all the pieces together. Tell us why you made the choices you did.
  4. How would these open source options work with one another? Are there any technical challenges to be solved to make the stack work?
  5. Are there any “gaps” in the stack where quality open source projects are not available? If yes, please provide a description of that gap and a thorough explanation of why existing open-source projects are not useful and what functions a new project would need to perform to fill the gap.


A total prize pool of up to $6,000 is available

  • Up to 2 grand prizes x $1,500 each
  • Up to 2 runner up prizes x $750 each
  • Up to 3 honorable mentions x $500



  • Open to submissions: June 20, 2019
  • Submission deadline: September 19, 2019
  • Judging: September 20 to October 21, 2019
  • Winners Announced: October 24, 2019

Other links:

  1. Recent Updates
  2. Forum


Click on the orange "Accept Challenge" Button to apply!

Updates 14

One day remaining!

Sept. 18, 2019, 9 a.m. PDT by Despina Maliaka

It's not too late! There is one more day to submit your innovative ideas for the Mozilla Voice Challenge. All submissions must be submitted by 19 September 2019 @ 2pm PT (Los Angeles).

In order for your entry to be eligible, your submission must meet the requirements outlined on our crowdsourcing page. 

View the How to Submit your entry video at the following link: https://herox.com/help/98-how-to-submit-an-entry-screencast

Good luck!

Before you submit...

Sept. 16, 2019, 9 a.m. PDT by Despina Maliaka

Dear Innovators,

Submission time is getting closer, and to ensure that you are most set up for success, Mozilla has dropped yet another tip:


"Before you start writing your proposed solution--even if you feel that you remember all the important parts of the Challenge--we urge you to read the Challenge description one last time before you submit. First of all, it will refresh your memory on the "Your Solution" section which covers what would make up a quality submission.


Secondly, please review the "Judging Scorecard" section. Remember that we'll be judging your proposal by using the six criteria presented here (4 for completeness and 2 for quality). So judge your own submission the same way yourself before we do--and make sure that your proposal meet these criteria.

Lastly, we want to remind you that there is no "ideal" proposal, but by following the outline described above you may dramatically improve your submission and increase the chances of becoming the winner"


Good luck!

-Mozilla Voice Challenge Team


One week left to submit!

Sept. 12, 2019, 9 a.m. PDT by Despina Maliaka

Hello again innovators,

Time is getting tight! With one week left to submit, you do not want to miss your opportunity to potentially contribute to the future of open-source voice technology!

Remember to submit your ideas before 19 September 2019 @ 2pm PT (Los Angeles).

We are so excited to see what amazing ideas we receive!

Good luck.

Just 10 Days to Go!

Sept. 9, 2019, 9 a.m. PDT by Despina Maliaka

Hello innovators!

We are just 10 days away from our submission deadline for the Mozilla Voice Challenge!

This message is to remind you to complete and finalize your submission before the deadline - 19 September 2019 @ 2pm PT (Los Angeles). The HeroX platform is automated so your submission must be finalized before that date for it to be considered for the judging stage.

View a How-To video on completing your submission here:https://herox.com/help/98-how-to-submit-an-entry-screencast

If you have any questions regarding the competition, please don’t hesitate to ask us directly or leave a comment on our crowdsourcing page Forum.

If you encounter any technical issues with the HeroX platform, please contact HeroX tech support at http://herox.com/contact.

Thank you for registering in Mozilla Voice Challenge. We look forward to receiving your submission and learning more about the breakthrough you want to create!


Missed the Webinar? We got you covered!

Sept. 5, 2019, 12:04 p.m. PDT by Despina Maliaka


If you missed yesterdays Q&A session - not to worry! Go ahead and watch the recording below.



Still have questions?

Feel free to post on the Challenge Forum and we will be happy to get an answer to you.


Forum 2
Community 130